Geographic Subject
Africa
5
Africa, East
1
Africa, Sub-Saharan
1
Alabama
3
America
1
Arizona
3
Arkansas
4
Asia
1
Bangkok Metropolitan Area
1
Bangladesh
1
British West Indies
2
Burma
2
California
1
Colorado
2
Confederate States of America
3
Connecticut
1
Delaware
2
Developing countries
1
Fiji
2
Florida
5
Georgia
2
Ghana
1
Guyana
1
Idaho
1
Illinois
7
Inde
2
India
6
Indiana
2
Iowa
3
Kentucky
1
Kenya
1
Louisiana
7
Maine
1
Malawi
1
Malta
1
Maryland
3
Massachusetts
7
Mekong River Region
1
Michigan
4
Minnesota
2
Mississippi
5
Missouri
7
Montana
1
New Hampshire
3
New Jersey
2
New Mexico
1
New York (State)
7
North Carolina
8
North Dakota
2
Ohio
2
more ...